Wrench



July 17, 1934. E TU STON v 1,966,773

WRENCH Filed May 24, 1933,

Patented July 17, 1934 UNITED STATES PATENT OFFICE Application May 24,1933, Serial No. 672,675 In Great Britain May 24, 1932 1 Claim.

According to the invention a screw adjustable wrench is provided with anouter jaw having a single face arranged at an angle of 120 to the faceon which the inner jaw slides and with an inner jaw with a V shapedrecess and having its edge which is adjacent to the stem oi the outerjaw spaced therefrom so that it can approach closely to the face of theouter jaw when the Wrench is closed whereby the range of adjust- 19 mentas regards small nuts is increased.

In the accompanying drawing Figure 1 is a perspective view of a screwadjustable Wrench according to the invention, With jaws expanded to takelarge nuts.

Figure 2 is a side View of the jaws when adjusted to take the smallestsize of nut.

Figure 3 is a cross section on line III- III of Figure 1, and Figure 4is a cross section on line IV-IV of Figure 1` In Figure 1 the outer jaw1 is rigid with the stem 2, on which the inner jaw 3 slides. The innerjaw 3 has a V-shaped recess 4, the faces of which may be of any desiredlength.

The single face of the outer jaw is arranged at an angle of 120 to theslide, and is of about the same length as the side of the largest nutthe wrench is` intended to grip, Whereas the inner face 6 of the recess4 is shorter, and the edge '7 -of the face 6 adjacent to the stem 2 isspaced therefrom, so that when the Wrench is closed, the

edge 7 can approach to the face 5 and a comparatively small nut can begripped as indicated in Figure 3, the range of sizes as regards smallnuts to which the Wrench can be adjusted being therefore considerablyincreased.

(Cl. 8l-166) The jaw 3 has a strap 8 embracing the stem 2, and a screw 9engaging with an adjusting nut 10. The strap 8 may be rivetted orelectrically Welded to the jaw 3.

The screw 9 has a iiat l1 sliding against the side 50 of the stem 2 asindicated in Figure 3, and the nut 10 fits in a recess 12 in the stemand has a milled or knurled outer surface to facilitate turning.

The stem 2 is formed with a handle 13.

The Wrench can be adjusted to take nuts ranging in size from thatindicated in Figure 1 to that indicated in Figure 2.

The centre of the V in jaw 3 has a channel 14 so as to allow closecontact of the V on both faces of a nut which may have been damaged onthe corners.

A screw adjustable Wrench having a ixed jaw formed with a gripping facearranged at an angle of 120 to the adjacent edge of the jaw, a movable75 jaw having an eng-aging face formed as a V` shaped recess, thatportion of the face of the sliding jaw next the Xed jaw being at anangle to the adjacent surface of the V-shaped jaw to permit the movablejaw to operate closely to the gripping surface of the xed jaw, athreaded stem depending from and in alignment with the movable jaw, saidstem having a flattened portion to bear against one side edge of theiixed jaw, and a nut threaded on the stem and movably seated in a recessin the xed jaw for operating the stein and thereby the movable jawlongitudinally relative to the xed jaw.

EDWARD TILSTON.

